Castiel awoke to his face buried in Dean's neck and collarbones. He rose from the bed, tiptoeing around the room as to not awaken Dean. He slung his backpack over the shoulder as Dean opened his eyes. "Hey," he said groggily, "What are you doing here?" Castiel said nothing and left the bedroom, slamming the door on his way out. "No, come back!" Dean called as he threw his blankets onto the ground, then fumbled out of bed after Castiel.
"Wait," Dean said when he finally caught up to Cas, "What happened last night?" Castiel didn't reply. He remembered every second of it, from Dean's voice when he answered the phone to how Dean had inched closer and closer to him as the night passed, ever so subtly. Castiel remembered, and decided that, to save them both from an embarassing morning, absolutely nothing happened last night.
"I gotta go." he snapped and slammed the door in Dean's face as he left.